In order to change DavMail settings, double click on the tray icon or right click on it and choose Settings...

The following table describes the main and advanced options :

Parameter	Description	Sample value
OWA url	Outlook Web Access URL to access the exchange server, i.e. the base webmail URL	http://exchangeServer/exchange/
Local POP port	Local POP server port to configure in POP client	110
Local SMTP port	Local SMTP server port to configure in POP client	25
Local Caldav HTTP port	Local Caldav server port to configure in Caldav (calendar) client	80
Local LDAP port	Local LDAP server port to configure in add directory (addresse book) client	389
Keep Delay	Number of days to keep messages in Exchange trash folder before actual deletion	30
Sent Keep Delay	Number of days to keep sent messages in Exchange sent folder	90
Calendar past events	Get events in the past not older than specified days count, leave empty for no limits	90
Allow remote connections	Allow remote connections to the gateway (server mode)	false
Bind Address	Bind only to the specified network address	false
Server certificate hash	Manually accepted server certificate hash, contains the SHA1 hash of a manually accepted certificate (invalid or self signed)	9F:CC:59:82:1F:C:CD:29:7C:70:F0:D8:37:B1:77:3F:48:84:AE:C4
Disable update check	Disable DavMail check for new version	false
Logging levels	Default, DavMail and HttpClient logging levels, see Log4J documentation for more details	WARN

The bottom panel can be activated to set an HTTP proxy and associated credentials if needed

Proceeed to Thunderbird mail setup